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authorNick Piggin <npiggin@kernel.dk>2010-08-18 04:37:35 +1000
committerAl Viro <viro@zeniv.linux.org.uk>2010-08-18 08:35:47 -0400
commitee2ffa0dfdd2db19705f2ba1c6a4c0bfe8122dd8 (patch)
treee48400d1a33f8d2e68589ccfd61637aa64462f08 /include/linux/tty.h
parentb04f784e5d19ed58892833dae845738972cea260 (diff)
fs: cleanup files_lock locking
fs: cleanup files_lock locking Lock tty_files with a new spinlock, tty_files_lock; provide helpers to manipulate the per-sb files list; unexport the files_lock spinlock. Cc: linux-kernel@vger.kernel.org Cc: Christoph Hellwig <hch@infradead.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Acked-by: Andi Kleen <ak@linux.intel.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Nick Piggin <npiggin@kernel.dk> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux/tty.h')
-rw-r--r--include/linux/tty.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 1437da3ddc62..f6b371a2514e 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -470,6 +470,7 @@ extern struct tty_struct *tty_pair_get_tty(struct tty_struct *tty);
extern struct tty_struct *tty_pair_get_pty(struct tty_struct *tty);
extern struct mutex tty_mutex;
+extern spinlock_t tty_files_lock;
extern void tty_write_unlock(struct tty_struct *tty);
extern int tty_write_lock(struct tty_struct *tty, int ndelay);